Fe 3 O 4 @uio66 core-shell composite for detection of electrolyte leakage from lithium-ion batteries

• Published in: Nanotechnology Vol. 34; no. 13; p. 135501
• Main Authors: Zhang, Erpan, Yan, Wenjun, Zhou, Shiyu, Ling, Min, Zhou, Houpan
• Format: Journal Article
• Language: English
• Published: England 26.03.2023
• Subjects: Fe3O4@uio66; lithium-ion batteries; electrolyte detection; early safety warning; core-shell
• ISSN: 0957-4484; 1361-6528
• DOI: 10.1088/1361-6528/acae5d

Fe O is an environmentally friendly gas sensing material with high response, but the cross-response to various analytes and poor thermal stability limit its practical applications. In this work, we prepared Fe O @uio66 core-shell composite via a facile method. The selective response to volatile organic compounds, especially to electrolyte vapors of lithium-ion batteries, as well as long-term stability of Fe O @uio66 has been dramatically enhanced compared to pure Fe O , due to the preconcentrator feature and thermal stability of the uio66 thin shell. Real-time detection of electrolyte leakage for an actual punctured lithium-ion battery was further demonstrated. The Fe O @uio66 sensor, after aging for 3 months, was able to detect the electrolyte leakage in 30 s, while the voltage of the punctured battery was maintained at the same level as that of a pristine battery over 6 h. This practical test results verified ability of the Fe O @uio66 sensor with long-term aging stability for hours of early safety warning of lithium-ion batteries.